High-temperature superconducting gradiometric SQUIDs and flux transformers

Citations of this article
Mendeley users who have this article in their library.
Get full text


Gradiometric DC superconducting quantum interference devices (SQUIDs) have been constructed from thin-film YBa2Cu3O7-x on MgO substrates. The SQUIDs were fabricated as forst-order gradiometers with PrBa2Cu3O7-x insulator providing electrical isolation at the crossovers. Highly symmetrical first-order gradiometer flux transformers have also been fabricated. These couple to the SQUIDs and enhance the sensitivity to magnetic-field gradients. Each flux transformer has two 20 turn flat spiral SQUID input coils and a pair of larger-area balanced pickup coils. Flux transformers with both parallel and series configured pickup loops have been fabricated. When coupled to a SQUID as a flip chip, one gradiometer was operated at 77 K with a gradient sensitivity of (0.79±0.03) nT/m/ √Hz at 10 Hz and (2.0±0.1) nT/m/ √Hz at 1 Hz. © 1994.




Keene, M. N., Chew, N. G., Goodyear, S. W., Edwards, J. A., Humphreys, R. G., Lander, K., & Satchell, J. S. (1994). High-temperature superconducting gradiometric SQUIDs and flux transformers. Physica C: Superconductivity and Its Applications, 230(1–2), 110–114. https://doi.org/10.1016/0921-4534(94)90451-0

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free